In addition to the whatever-that-was above, Warriors execs, coaches and even Kevin Durant at one point came out on stage and were issued hardhats and golden shovels. Of course they just awkwardly stood there, as it was a stage.

The ceremony in San Francisco's Mission Bay district was the official groundbreaking for the new Warriors stadium in San Francisco ... yep, the Warriors are moving back across the Bay, where they lived from 1962-71. The new $1 billion Chase Center should be finished in time for the 2019-20 season. NBC Bay Area:

The 18,000-seat Chase Center will anchor a district of 11 acres of restaurants, cafes, offices, public plazas and other amenities the neighborhood currently lacks, along with a new five-and-a half-acre public waterfront park.

Chase Center will be located on a Muni Metro rail line. When complete, it will be the only privately financed facility of its kind built on private property in the modern era of professional sports, the team said.

So that sounds swell, but not to Oakland -- Oracle Arena sits directly across the Bay, as the crow flies, from Tuesday's little heavy machinery shindig. Many are saying that the Warriors are turning their backs on the fan base that got them where they are today -- fleeing lower-economic Oakland for a more upscale existence in San Francisco.

But there is more controversy:

A group called the Mission Bay Alliance, comprised of community members and professors, doctors and donors of the nearby UCSF campus, alleged the city didn't properly study the new stadium's impact on traffic and the environment.

But in November, the California Courts of Appeal upheld the Warriors' environmental review.

There was also a lawsuit alleging that the Warriors aren't hiring enough minority workers, but that was dismissed today.